Effect of inhomogeneous Dzyaloshinskii-Moriya interaction on antiferromagnetic spin-wave propagation

被引：10

作者：

Lee, Seung-Jae ^{[1
]}

Lee, Dong-Kyu ^{[2
]}

Lee, Kyung-Jin ^{[1
,2
]}

机构：

[1] Korea Univ, KU KIST Grad Sch Converging Sci & Technol, Seoul 02841, South Korea

[2] Korea Univ, Dept Mat Sci & Engn, Seoul 02841, South Korea

来源：

PHYSICAL REVIEW B | 2020年 / 101卷 / 06期

基金：

新加坡国家研究基金会;

关键词：

DOMAIN-WALL MOTION; EXCHANGE; DRIVEN; TORQUE;

D O I：

10.1103/PhysRevB.101.064422

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the effect of inhomogeneous Dzyaloshinskii-Moriya interaction (DMI) on antiferromagnetic spin-wave propagation theoretically and numerically. We find that the inhomogeneous DMI affects various spin-wave properties including the amplitude. The inhomogeneous DMI also provides a way to construct a magnonic crystal with forbidden and allowed antiferromagnetic spin-wave bands in terahertz frequency ranges. In contrast to ferromagnetic spin waves, antiferromagnetic spin waves experience a polarization-dependent phase shift when passing through the inhomogeneous DMI, offering a magnonic crystal that also serves as a spin-wave polarizer.

引用

页数：7

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